caldav: add Client.MultiGetCalendar

caldav/caldav.go

@@ -47,6 +47,11 @@ type CalendarQuery struct {
 	CompFilter  CompFilter
 }
 
+type CalendarMultiGet struct {
+	Paths       []string
+	CompRequest CalendarCompRequest
+}
+
 type CalendarObject struct {
 	Path    string
 	ModTime time.Time

caldav/client.go

@@ -218,6 +218,38 @@ func (c *Client) QueryCalendar(calendar string, query *CalendarQuery) ([]Calenda
 	return decodeCalendarObjectList(ms)
 }
 
+func (c *Client) MultiGetCalendar(path string, multiGet *CalendarMultiGet) ([]CalendarObject, error) {
+	propReq, err := encodeCalendarReq(&multiGet.CompRequest)
+	if err != nil {
+		return nil, err
+	}
+
+	calendarMultiget := calendarMultiget{Prop: propReq}
+
+	if multiGet == nil || len(multiGet.Paths) == 0 {
+		href := internal.Href{Path: path}
+		calendarMultiget.Hrefs = []internal.Href{href}
+	} else {
+		calendarMultiget.Hrefs = make([]internal.Href, len(multiGet.Paths))
+		for i, p := range multiGet.Paths {
+			calendarMultiget.Hrefs[i] = internal.Href{Path: p}
+		}
+	}
+
+	req, err := c.ic.NewXMLRequest("REPORT", path, &calendarMultiget)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Add("Depth", "1")
+
+	ms, err := c.ic.DoMultiStatus(req)
+	if err != nil {
+		return nil, err
+	}
+
+	return decodeCalendarObjectList(ms)
+}
+
 func populateCalendarObject(co *CalendarObject, resp *http.Response) error {
 	if loc := resp.Header.Get("Location"); loc != "" {
 		u, err := url.Parse(loc)

caldav/elements.go

@@ -60,6 +60,15 @@ type calendarQuery struct {
 	// TODO: timezone
 }
 
+// https://tools.ietf.org/html/rfc4791#section-9.10
+type calendarMultiget struct {
+	XMLName  xml.Name        `xml:"urn:ietf:params:xml:ns:caldav calendar-multiget"`
+	Hrefs    []internal.Href `xml:"DAV: href"`
+	Prop     *internal.Prop  `xml:"DAV: prop,omitempty"`
+	AllProp  *struct{}       `xml:"DAV: allprop,omitempty"`
+	PropName *struct{}       `xml:"DAV: propname,omitempty"`
+}
+
 // https://tools.ietf.org/html/rfc4791#section-9.7
 type filter struct {
 	XMLName    xml.Name   `xml:"urn:ietf:params:xml:ns:caldav filter"`